Telegraphic transmitting device.



Y J. H. ABERNETHY. TELEGRAPHIC TRANSMITTING DEVICE.

APPLICATION FILED APR. 17, m5.

Patented Jan. 18, 1916.

2 SHEETS-SHEET Witnesses 22; .4 Inventor THB COLUMBIA PLANOQRAPH coWASHINGTON, D. C V

J. H. ABERNETHY. TELEGRAPHIC TRANSMITTING DEVICE.

APPLICATION FILED APR. 17, I915.

1 1681396 Patented Jan. 18, 1916.

2 SHEETS-SHEET 2.

Witnesses Inventor THE COLUMBIA FLANOURAPH co., WASHINGTON, D. C

Attorneys cairn.

* same-s ca ies,

a'oiinrrowaan ABEBNETHY, or DANVILLE; VIRGINIA.-

TELEGRAPHIGTRANSMITTING DEVICE.

, it known that I, JOHNVH, Ae smw, a citizen of the United States,residing at Danville,;in the county. of Pittsylvaniaand State ofVirginia, have invented ,a'newsand Lnseinl Telegraphic TransmittingDevice, of

which the followving specification.

The present invention appertains tostelegraphic traiismitters, and aimsto provide a'novel and improved telegraphic, transinitting "device ofsuch construction and opera tion' that a series of dots may be prodncedby a single operation of thexdevice,

It is the object' of the infif'jen tion to provide a transmitter' which"enables the messages to be quickly and eiliectively ;transmitted, aplurality offdotsbeing made by a singlev operationoi. the: transmitter,and the transmitter halving itsparts so arranged that thereiwill be'noliability of the dots and dashes'interfering, 01 iny otl'ierf ords, itis the object of the inventionfto] Soconstrnct the transmitter as toavoid the liability of dot splitting or dash ammingff A salient featureoi th'e invention resides in thefact that the device is so econstriicted, that the COn'tacts which cooperate for producing the dotsa're movedtoward one another when; the dots are to be roduced, and areseparated to safe distance when the dashes are prodn' ced, andcoinversely,'thecontacts 'ivhich cooperate m' ro, duce the dashes areseparated When'fthe dot producing. contacts are moved ftotvard; oneanother. v This reduces to a minii'niunor nullity, the liability of Fdotsplitting-" or dash jamming occurring. i

It is also ithin the scope of the inven tion to provide a,transmitting'device having the features above noted, and which will notbe objectionably complicated or expensive inconstruction, but which onthe other hand may be readily and inexpe'n slvely manufactured, thedevlce being th0rbeingefii oughly convenientj'to operate, and cientandserviceable in use. a I VV1th the foregoing and other ob ects 1n viewwhich will appear as the description proceeds, the invention resides inthe combination and arrangement, of parts and in' the, details ofconstruction hereinafter described and claimed, it being "understoodthat changes in the precise embodiment of theinvention' hereindisclosedean be made Within the scope of What is 'cla1med,"W1thSpecification of Letters Patent.

drawings, wherein 1 the lever 5.

stein 9 has a. head 11 and coiled Wire eX- out departing from the spiritof the invention.

The invention is illustrated in its preferred embodiment in theaccompanying Figure 1 is a plan View of the improved transmittingdevice, portions being broken awayq Fig, 2 is a crosssection taken onthe line22 of Figal. 1 Fig. 3v is aside elevation lt the device,portionsbeing broken away, Fig. at is a cross-section taken on the hue HofF 1g. 1. 1

In carry ngout the lnve itiointhere is "provided a suitable base 1' ofmetal or other material which a conductor of electrical energy, andWhich is preferably OfIQCtdI I- gnlar contour. An upstanding yoke orarch 2 secured upon the base 1 adjacent one end thereof, and stirrup 3is pivoted Within the yoke 2. To this, end, the lupper and lowerportions of the stirrup 3 I are pivoted, as at at, to thenpper portionofthe yoke and ,nppersnrface of the base 1, respec ti'vely. Thebase '1 ispreferably supported by insulating feet or studs l An actuating lever 5has its intermediate portionseclired ithin the stirrup and iinger pieces6 faresecnred in any suitable;mannerv to the forward end or arm of thelevers. An oscillatory arm"? has one endpivoted by means of apin orpivot element Ste the stirrup 3 at one side of the lever 5, the arm 7projecting away'froin the finger pieces 6, andascrew or stein 9 has oneend engaged to the arm 7 andprojects loosely through an aperture lOformed in the rear arm of The free end of the screw or pansion spring 12is disposed betweenflthe head; 11 and lever '5 for normally andjiyleldrdthe rear ably swinging tlie arm 17 toWa arm of thesaid lever 5.

The ba'se' 1 carries a standardlli at that I Patented Jan. 1a, 219%.Application filed April 1-7, 1915. same No. 2am.

side of the arm' opposite the lever and,

a screw or stem 1eisthreadedlyor adjustablyengaged through the standard13 and projects toward thearm 7. Ajcoiled Wire expansion spring 15 isdisposed upon the free end portion of the screw or stem 14. one en'd ofthe spring 15 bears against the arm 1 7,ai1d the other endofthespring 15bears against an adjustable not .16 threaded upon the screw '14. The nut16 may be adjnstedfor regulating the tension the spring 15asdesirech'and'the springlfi serves ios g as

to swing the arm 7 toward the lever 5. The screw or stem 14 also limitsthe movement of the arm in one direction.

A second standard 17 is carried by the base 1 at that side of the arm 7opposite the standard 13, and an adjustable screw or stop 18 isthreadedly or otherwise adjustably engaged through the standard 17 sothat its free end projects adjacent the free end of the arm 7. The freeend of the arm 7 projects beyond the respective end of the lever 5, andnormally bears against the screw or stop 18. V The spring 15 normallymoves the arm 7 against the screw or stop 18. The

, arm 7 is thus arranged to swing a limited amount between the screws orstops 14 and 18.

and a lever 21 is fulcrumed intermediate its ends upon the standard 19.The forward arm of the lever 21 is connected by means of a l nk 22 tothe rear arm of the actuating lever 5, the link 22 being of insulatingmaterial whereby the lever 5 and corresponding parts are insulated fromthe lever 21 and standard 19. The link 22 works loosely through anopening 22 formed in the arm 7, whereby the'link 22 and arm 7 do notinterfere with one another.

' The rear arm of the lever 21 has a contact 23 which cooperates with'ascrew or contact 24 threadedly or adjustably engaged through'anupstanding standard 25 carried by the base 1. j

A. switch 26 is pivoted or fulcrumed upon the base 1 and is engageableunder a contact 27 carried by the standard 19, whereby the standard 19may be electrically connected withthe base 1 by means of the switch 26when it is desired to normally close the circuit for cutting out thetransmitting device. A vibrator bar 28, which is approximately in.alinement with the arm 7, is connected to the arm 7 by means of aflat'vertical spring 29." One end of the spring 29 is secured to orwithin the free end of the arm 7, and the other end of the spring 29 issecured to or within the adjacent end of the bar 28, whereby the bar 28is supported for hori z ontal vibratory movement by the spring 29, butis supported above the base by the spring-29 so that the vibratory bar28 will not be liable to interfere with the base.

An adjustable weight ,30 is slidably 1 mounted upon the bar 28, andisprovided with a set screw 31 for clamping it in position upon thebar 28.The weight is provided with a recess'32 at one side, and pins 33 areengaged through the weight 30 and extend across the recesses 32, toengage the bar 28 for holdingthe weight .30 slidablv upon the bar.

The recess 32 accommodates a resilient or flexible contact strip orleafspring 34,-which is secured at one end to thefree end of the bar 28,as at 35, and the spring strip 34 projects along one side of the bar 28toward the other end thereof. The recess 32 receives the spring strip:34 and allows said strip to vibrate therein. The free or forward endportion of the strip 34 is bent back, as at 36, and the bent back orfree end portion 36 of the strip 34 is provided with a contact 37 whichis cooperable with the contact 38 carried by one end of a screw oradjustable member 39 engaged through the rear arm of the lever 21; I

A screw or adjustable stop 40is engaged through the bar 28 adjacent itsforward end and serves to limit the movement of the spring strip 34toward the bar 28.

The movement of the vibratory bar 28 away from the lever 21 is limitedby means of a screw or adjustable stop 41 engaged through a standard 42carried by the base, the free end of the screw 41 having a buffer 43thereon against which the free endof the bar 28 is arranged to bear whenthe bar 28 moves away from the lever 21.

It will be noted that the screw 9, screw 14, screw 18, screw 40, screw39, screw 24, screw 4:1 and weight 30 may each be adjusted in order thatthe device will operate properly. One line or conductor of the circuitis connected to the base landw'ill therefore be in the transmittingdevice from the circuit, the

switch 26 may be closed or swung into ongagement with the contact 27,which will connect the-baseiand post 19 for the intended purpose. Duringthe operation of the trans- I mitting. device, the switch 26 is swungopen,

so as to disconnect the base and standard 19.

Presupposing that the operator is facing that end of the transmitterhaving the finger pieces 6, when it is desired to produce one or aseries of dots," the finger piecesG are movedtto the right, as viewed inFig. 1, and the rear arm of the lever 5 will thus be swung to the left.This will cause the rear arm of'the lever 5 to contact with the arm 7and swing said arm to the left. The vibrator 28 will thus be swungsharply to the left, Due to the fact that the rear arm of the lever, 5is swung to the left, the forward arm of the lever 21 will also be swungto the left through the medium'of the link post or 22, and. the rear armof the lever2'1 which carries the contact 38 will be swung toward theright. It will therefore be evident'that can the cooperating contacts37. and 38 which produce the dots are moved toward one another when thefinger pieces .6. aremoved between the standard. 19 and base. 1,

through the lever 21, contact 38, contact 37,

strip 8 t,- bar 28, spring 29, arm 7 and stirrup The vibrator 28 notonly vibrates,

but the contact strip 34 also vibrates to assist in the rapid and effectve production of the dots. The number-of dots produced is. governed bythe length of time that the finger pieces 6 are held to the right,sothat either a single dot or a series iofdcts may be quickly produced.llVhen therequired number of dots are produced, the finger pieces 6 arereleased, and asa; result the spring 15 will swing the arm 7 back tonormal position against the stop 18, and this will cause thevibratorQSto swing back to initial position, and at the same time thelever 21 will also swing back to normal position. The contacts 37 and 38are thus quickly and effectively separated. Thus, as

soon as the desired number of'dots are produced the cooperating dotproducing contacts may be separated to such a distance that there is noliability for the transmitter to produce an excessive dot or dots.

In. order to produce one or more dashes, the dashes being made one at atime, the finger pieces 6 are moved to the left, as seen in Fig. 1, andthe rear arm of the lever 5 being thereby moved to the right will causethe link 22 to pull the forward arm of the lever 21 to the right. Thiswill swing the rear arm of the lever 21 to the left to bring the contact23 of the lever 21 into engagement with the screw or contact 24: forclosing the circuit. The finger pieces 6 are held to the left asuflicient time to produce a dash impulse in the, circuit,

and the finger pieces 6 are then released so as to separate the contacts23 and :24. When the dash is being produced, the vibrator 28 will remaininactive or passive, since the rear arm of the lever 5 being moved tothe;

right, cannot move the arm 7, because the arm 7 bears against thescrewor stop 18. The spring 12 is brought under greater compression ortension when (the rear arm of the lever 5 is swung to the right, so thatthe spring 12 returns the lever 5 tonormal or intermediate position whenthe finger pieces 6 are released after having been moved to the left.Therefore, by properly manipulating the finger pieces 6, various codesmay be followed, the finger pieces 6 being moved. to the right when-adot or series of dots are desired and being moved to tne left when a,dash is to be produced.

.The f transmitter enables the dots and dashes to, be qu ckly andettectivelyproduce d, andwill eliminate the possible cccurrence of dotsplitting or dot jamming From the foregoing, taken in connection" withthe drawings, it isbelieved that the "advantages and attributes of thepresent apparatus will be obvious to those skilled in the art, withoutfurther comment being necessary. I 1

.. Having thus described the invention, what claimed new is 1., In atelegraphic transmitting device, a vibrator, having a COIltflClJyHlBZLHSforactuating said vibrator, a. contact operable with the aforesaidcontact, and means for moving the second mentioned contact toward thefirst mentioned contact when the vibrator 1s set in motion, and fornormally moving the I second -.1nentioned contact away from thefirstmentioned contact.

necting said member and said means, whereby when said means is actuatedfor setting the vibrator in mo-tlon the fourth mentioned contact ismoved toward the first mentioned contact, while the other contacts aresepa rated, said means being operable for swinging the second contactand third mentioned contacts into engagement and whereby the fourthmentioned contact will be moved away from the first mentioned contact.

' 3. In a telegraph c transmltting device, an I actuating'lever, avibrator operatively cons nected to said lever to be set in motionthereby and having a contact, a second lever having a contactcofiperable with the first mentioned contact, and an operativeconnection between the two levers, whereby'when the actuating lever ismoved for setting the vibrator in motion the second lever will be swungto'move its contact toward the first mentioned contact. I

4. In a telegraphictransmitting device, an

actuating lever, a vibrator operatively con-,

nected thereto to be set in motion thereby and having a contact, asecond lever having a contact co perable with theaforesaid contact andanother contact, a fourth contact coiperable with the third 'mentionedcon tact, and an operativeconnection between the two-levers, wherebywhen the actuating lever is swung in one direction'for setting thevibrator in motion the second lever will be swung t0 movethe secondmentioned contact toward the first mentioned contact and to move thethird mentioned contactaway from the fourth mentioned contact, andwhereby when the actuating lever is swung in the other direction thesecond mentioned contact will be moved away from the first mentionedcontact while the third mentioned contact is moved into engagement withthe fonrthinentioned contact.

- i 5. In a telegraphic transmitting device, an

actuating lever, an oscillating arm arranged lever having a contactcoo'perable with the aforesaid. contact and another contact, a linkconnecting the two levers whereby when the actuating lever is swung nthe sald direc- 'Copies of this patent may be obtained for five centseach, by addressing the Commissioner of Patents,

tion the second mentioned contact will be moved toward the firstmentioned contact and when the actuating lever isswung in the otherdirection the second mentioned.

contact will be moved away from the first mentionedl contact, a fourthcontact coeperating with the third mentioned contact whereby when theactuating lever is swung to move the second mentioned contact away fromthefirst mentioned one, the thirdmentioned contact will be, moved towardthe fourth mentioned contact, and spring means between said actuatinglever and arm tending to move the actuating leverand arm to-. .gether.

Washington, D. G.

